It seems like whenever I do chest exercises, I feel the burn in my front deltoids and rarely in the actual pectoral major/minor. I don't have small shoulders, but it could be that I just have weak or tight front deltoids.
It's pretty frustrating actually, because it feels like the only way I can get a decent pump in my chest is by doing flies, and even then my deltoids get a major burn.
I'm 6'2 and 175 pounds and I got my flies up to 60 pound dumbbells in the spring, but my bench press was only at 70 or 75 pound dumbbells. It's annoying.